fix(ssh): remove authorized_keys filename for 2.1.0

Co-authored-by: Copilot <copilot@github.com>

README.md

@@ -138,11 +138,11 @@ environment variables can be espcilitly defined, to consume it during execution
 > [!IMPORTANT]
 > To allow consuming environment variables must be set `PermitUserEnvironment yes` in `/etc/ssh/sshd_config`.
 
-Private and public keys are configured directly using `filename` and `content`. The role writes each key to
-`~/.ssh/<filename>`. Store private key content encrypted with Ansible Vault.
+Private keys are configured using `filename` and `content`; the role writes them to `~/.ssh/<filename>` and extracts
+their public keys to `~/.ssh/<filename>.pub`. Store private key content encrypted with Ansible Vault.
 
 Entries in `authorized_keys` are also added to `~/.ssh/authorized_keys`, including their optional command and environment
-settings. Public keys are still automatically extracted from private keys into `~/.ssh/<filename>.pub`.
+settings.
 
 ```yaml
 unix_users:
@@ -157,13 +157,11 @@ unix_users:
         StrictHostKeyChecking: "no"
         UserKnownHostFile: /dev/null
       authorized_keys:
-      - filename: claire@claire-pc.pub
-        content: ssh-ed25519 AAAAC3NzaC... claire
+      - content: ssh-ed25519 AAAAC3NzaC... claire
       - command: /usr/local/bin/upload-file.sh
         envs:
         - key: SSH_KEY_NAME
           value: bob@bob-pc
-        filename: bob@bob-pc.pub
         content: ssh-ed25519 AAAAC3NzaC... bob
       private_keys:
       - filename: toor@toor-pc.ed25519.key